1) medium-voltage power network
The harm of single-phase grounding fault current in the medium-voltage power network has been gotten the universal solicitude of people.
The recent developments of neutral point ground modes of medium-voltage power network and variety of national related standards are presented.
2) MV distribution network
Researches on Tabu search based algorithm for optimization of supply area division in MV distribution network planning;
Combined with the practice and reference to these typical power supply modes, the MV distribution network in area of Beijing Finance Street was retrofitted by Beijing Electric Power Co.
Derivative connections applied in MV distribution networks are proposed.
3) MV distribution networks
Research on capacity-load ratio in district MV distribution networks;
4) middle voltage distribution network
Analysis of typical connection modes of urban middle voltage distribution network;
5) medium-voltage distribution network
A software system for the quantitative assessment of the reliability of medium-voltage distribution network has been developed on the basis of the reliability theory, graph theory and the object-oriented program technology.
In order to solve the confliction between the development of 10 kV medium-voltage distribution network and the rapid load increasing in Nanjing district,enhance the network’s power supply ability and adaptability,reduce the power supply cost,it is decided to generalize 20 kV voltage grade based on a technology-economy comparison.
A lot of simulations for the 6-35kV medium-voltage distribution network withdifferent neutral grounding techniques have been done by the ATP/EMTP software inthis paper,and the disadvantages of neutral resonance grounded mode and neutralflexible grounded mode have been proposed by in-depth analyses and studies on thesimulation results.
6) medium voltage distribution network
For a long time, there have been lots of energy losses in medium voltage distribution networks in China, and it is very difficult to calculate them properly.
长期以来 ,国内中压配电网线损计算困难 ,虽已做过大量研究 ,但仍未完全解决。
According to the requirements,the connections in common use for the medium voltage distribution network are analyzed and compared from the aspects of economy,reliability,flexibility.